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这么为什么不能实现文件下载

WBOY
WBOYOriginal
2016-06-13 11:42:491918browse

这样为什么不能实现文件下载
$root="D:/wamp/www/新建文件夹/";
if(is_dir($root))
{
   $openHandle=opendir($root);
   while(false!==($file=readdir($openHandle)))
   {
   if(!is_dir($root.$file))
   {
   echo "".$file."
";
    echo "$root$file
";
   }
   }
   closedir($openHandle);
}
else 
{
echo "文件夹不存在";
}
?>
这段代码为什么不能实现文件下载 浏览器:搜狗浏览器 IE 都试了

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